diff options
Diffstat (limited to 'fs/xfs/xfs_iomap.c')
-rw-r--r-- | fs/xfs/xfs_iomap.c | 82 |
1 files changed, 28 insertions, 54 deletions
diff --git a/fs/xfs/xfs_iomap.c b/fs/xfs/xfs_iomap.c index fbe5d32f9ef5..7545dcdaa8aa 100644 --- a/fs/xfs/xfs_iomap.c +++ b/fs/xfs/xfs_iomap.c @@ -55,46 +55,25 @@ #define XFS_STRAT_WRITE_IMAPS 2 #define XFS_WRITE_IMAPS XFS_BMAP_MAX_NMAP -STATIC void -xfs_imap_to_bmap( - xfs_inode_t *ip, - xfs_off_t offset, - xfs_bmbt_irec_t *imap, - xfs_iomap_t *iomapp, - int imaps, /* Number of imap entries */ - int flags) -{ - iomapp->iomap_offset = imap->br_startoff; - iomapp->iomap_bsize = imap->br_blockcount; - iomapp->iomap_flags = flags; - iomapp->iomap_bn = imap->br_startblock; - - if (imap->br_startblock != HOLESTARTBLOCK && - imap->br_startblock != DELAYSTARTBLOCK && - ISUNWRITTEN(imap)) - iomapp->iomap_flags |= IOMAP_UNWRITTEN; -} - int xfs_iomap( - xfs_inode_t *ip, - xfs_off_t offset, - ssize_t count, - int flags, - xfs_iomap_t *iomapp, - int *niomaps) + struct xfs_inode *ip, + xfs_off_t offset, + ssize_t count, + int flags, + struct xfs_bmbt_irec *imap, + int *nimaps, + int *new) { - xfs_mount_t *mp = ip->i_mount; - xfs_fileoff_t offset_fsb, end_fsb; - int error = 0; - int lockmode = 0; - xfs_bmbt_irec_t imap; - int nimaps = 1; - int bmapi_flags = 0; - int iomap_flags = 0; + struct xfs_mount *mp = ip->i_mount; + xfs_fileoff_t offset_fsb, end_fsb; + int error = 0; + int lockmode = 0; + int bmapi_flags = 0; ASSERT((ip->i_d.di_mode & S_IFMT) == S_IFREG); - ASSERT(niomaps && *niomaps == 1); + + *new = 0; if (XFS_FORCED_SHUTDOWN(mp)) return XFS_ERROR(EIO); @@ -136,8 +115,8 @@ xfs_iomap( error = xfs_bmapi(NULL, ip, offset_fsb, (xfs_filblks_t)(end_fsb - offset_fsb), - bmapi_flags, NULL, 0, &imap, - &nimaps, NULL, NULL); + bmapi_flags, NULL, 0, imap, + nimaps, NULL, NULL); if (error) goto out; @@ -145,45 +124,41 @@ xfs_iomap( switch (flags & (BMAPI_WRITE|BMAPI_ALLOCATE)) { case BMAPI_WRITE: /* If we found an extent, return it */ - if (nimaps && - (imap.br_startblock != HOLESTARTBLOCK) && - (imap.br_startblock != DELAYSTARTBLOCK)) { - trace_xfs_iomap_found(ip, offset, count, flags, &imap); + if (*nimaps && + (imap->br_startblock != HOLESTARTBLOCK) && + (imap->br_startblock != DELAYSTARTBLOCK)) { + trace_xfs_iomap_found(ip, offset, count, flags, imap); break; } if (flags & (BMAPI_DIRECT|BMAPI_MMAP)) { error = xfs_iomap_write_direct(ip, offset, count, flags, - &imap, &nimaps, nimaps); + imap, nimaps, *nimaps); } else { error = xfs_iomap_write_delay(ip, offset, count, flags, - &imap, &nimaps); + imap, nimaps); } if (!error) { - trace_xfs_iomap_alloc(ip, offset, count, flags, &imap); + trace_xfs_iomap_alloc(ip, offset, count, flags, imap); } - iomap_flags = IOMAP_NEW; + *new = 1; break; case BMAPI_ALLOCATE: /* If we found an extent, return it */ xfs_iunlock(ip, lockmode); lockmode = 0; - if (nimaps && !isnullstartblock(imap.br_startblock)) { - trace_xfs_iomap_found(ip, offset, count, flags, &imap); + if (*nimaps && !isnullstartblock(imap->br_startblock)) { + trace_xfs_iomap_found(ip, offset, count, flags, imap); break; } error = xfs_iomap_write_allocate(ip, offset, count, - &imap, &nimaps); + imap, nimaps); break; } - ASSERT(nimaps <= 1); - - if (nimaps) - xfs_imap_to_bmap(ip, offset, &imap, iomapp, nimaps, iomap_flags); - *niomaps = nimaps; + ASSERT(*nimaps <= 1); out: if (lockmode) @@ -191,7 +166,6 @@ out: return XFS_ERROR(error); } - STATIC int xfs_iomap_eof_align_last_fsb( xfs_mount_t *mp, |